Improvement in bearings for car-axles



H. L. slnMAN.

Bearings for C ar-Axlles. 10,153,535

PatetedJ-an. 5,18'75.

98- 4l PARK PLACE, N.Y.

UNITED STATES PATENT OFFICE.

HENRY L. SIDMAN, OF JERSEY CITY, NEW JERSEY.

IMPROVEMENT IN BEARINGS FOR CAR-AXLES.

Specification forming part of Letters Patent No. l 58,535, dated January 5, 1875; application filed November 24, 1874.

To all whom it may concern Be it known that I, HENRY L. SIDMAN, of Jersey City, in the county of Hudson and State otl New Jersey, have invented a new and Improved Bearing for Gar and other Axles; and that the following` is a full, clear, and exact description of the same, reference being had to the accompanying drawings and to the letters of reference marked thereon, making a part of this specification.

This invention is in the nature of an improvement in bearings for car and other axles; and the invention consists in an axle-bearing constructed with a series of oil-channels which are parallel with each other and parallel with the axis of the axle, substantially in the manner hereinafter described.

As is well known among railway men, great difficulty is experienced in keeping the journals properly lubricated, and in preventing their Wearing down and becoming heated.

Various devices of this kind have been constructed,and to more ett'ectually accomplish this desirable result is the object of this invention.

ln the accompanying sheet of drawings, Figure l is an edge view of my improved axlebearing, partly in section; and Fig. 2, a crosssection of the saine, taken in the line x x, Fig. l.

Similarletters of reference indicate like parts in the several iigures.

A represents the bearing for an axle, a-nd it may be constructed from any suitable material. This box has a curved interior surface, c, which snugly flts the surface of the axle, as shown in Fig. 2. This curved surface of the bearing has formed in it a series of longitudinal channels, B, these channels being parallel with each other and with the axis of the journal. A blank space, c, is left in the center ot the bearing, upon which the journal more directly bears.

The ends of the bearing A may be capped, or in any other desirable manner the ends of the parallel channels may be closed.

The other portions of my bearing being similar to those of other axle-bearin gs, they need not be described.

Having now described the construction of my axle-bearing, its operation is as follows:

The axle or journal having been packed with waste or other similar substance saturated with oil, (the box A having been previously placed in position for a bearing,) the oil enters into and fills the channels B, and as the axle revolves against the bearing, it necessarily passes continually in contact with the surface of the oil contained in these channels, and in this way the journal is kept continually lubricated, each channel acting, as it were, as a reservoir of oil, delivering it to the surface of the journal freely as it is required, and being reiilled by the oil which is given out from the saturated waste as pressure is brought npon it by the weight of the axle and car. The parallel channels B are made of sufficient depth to insure their proper working, even after the surface ofthe bearing has been worn by the friction ofthe axle. The space c in the center of the curved surface receives the weight of the car, Sto., more directly than the rest of the box, and its under surface is, of course, kept well lubricated by the rotation of the journal.

By constructing an axlebox as above described, it is believed that a bearing will be made that will obviate the necessity of babbitt or other anti-friction metal being used, the lubrication being uniform and certain, and the length and depth of the channels and their position will etl'ectually prevent their becoming clogged or stopped up with gum or thickened oil, since they willcontain oil enough, and it will be so readily given out and replenished that the oil will remain uid at all times.

I am aware that axle-bearings have been made with parallel longitudinal oil-channels, but the central bearing-surface c is absent 5 and hence,

Having thus described my invention, what l claim as new, and desire to secure by Letters Patent, is-

A bearing for axle-boxes with parallel lon gitudinal oil-channels B and a central bearingsurface, c, substantially as shown and described.

THoMAs ALDEIDGE, lV. I. STEEL. 

